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Accelerometer-Derived Rest-Activity Rhythm Amplitude, Genetic Predisposition, and the Risk of Ischemic Heart Disease:
Lele Wang1, Juying Zhang1, Xiong Xiao1
1West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China.
Disrupted rest-activity rhythm amplitude (RARA) is linked to a higher risk of ischemic heart disease (IHD). This association appears independent of genetic predisposition, suggesting RARA is significant for IHD prevention.
Area of Science:
- Chronobiology
- Cardiovascular Epidemiology
- Genetic Epidemiology
Background:
- The rest-activity rhythm amplitude (RARA) is a fundamental human behavior linked to various health outcomes.
- The causal relationship between RARA and ischemic heart disease (IHD), and potential genetic modification, remains unclear.
Purpose of the Study:
- To investigate the causal association between RARA and IHD.
- To determine if genetic predisposition modifies the RARA-IHD relationship.
Main Methods:
- Prospective cohort analysis of 84,095 UK Biobank participants using wrist actigraphy.
- Mendelian randomization (MR) analysis using UK Biobank and FinnGen GWAS data.
- Assessment of incident IHD and genetic predisposition via polygenic risk scores (IHD-PRS).
Main Results:
- Disrupted RARA was significantly associated with increased IHD risk (HR 1.20).
- No significant modification by genetic predisposition was observed.
- MR analysis supported a causal link between RARA and IHD (OR 1.13).
Conclusions:
- A potential causal relationship exists between RARA and IHD.
- This association is independent of genetic predisposition.
- RARA is highlighted as significant for IHD prevention strategies.
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